Shock- and Noise-Sensitive Diesel-Mechanic Drive

Navy applications of this type like for example mine hunting boats place such a heavy demand on the shock resistance as well as the noise behavior of the drive unit that the use of elastic mounting from commercial ships is not suitable. Therefore, often so-called double elastically mounted drive units are used here, whereby the elastically mounted, four-stroke diesel engine and the rigidly mounted reduction gear are fitted on a common base frame that is in turn elastically mounted to the ship’s hull. This drive configuration requires a further coupling behind the gearbox, in addition to the highly flexible coupling between the main engine and the gearbox, which absorbs the relative movements between the elastically mounted common base frame and the fix mounted propeller shaft line in the event of shock.